Signal for adding-machines.



No. 761,149. PATENTED MAY 31, 1904 F. H. GOTTRILL.

SIGNAL FOR ADDING MACHINES.

APPLIOATION FILED APiL'l'L 19 03.

N0v MODEL.

PATE T CF -Iatented May 31, 1904.

ICE.

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SIGNAL FOR ADDING-MACHINES.

SPECIFICATION forming part .of Letters Patent N0. 761,149, dated May 31, 1904.

Application filed Lpril 1'7, 1903.

To all whom it may concern:

at a glance if the machine is clear or not;

and it consists in certain peculiarities of construction and combination of parts to be fully set forth hereinafter with reference to the accompanying drawings and subsequently claimed.

In the drawings, Figure 1 is P vertical section of a portion'of an adding-machine with my improvement attached thereto. Fig. 2 is a detail section on line 2 2 of Fig. 1, and Fig. 3 is a perspective view of my device with a fragment of the adding-machine in dotted mes.

My device is more particularly applicable to that class of machines such as is shown in Patent No. 595,864, December, 21, 1897, where a series of disks having numbers from O to 9 are arranged upon a shaft at the lower front portion of the machine and when a key is depressed for a certain amount its corresponding disk will be revolved and will display the amount to the operator, while all other disks remain at zero. When this operation has been repeated as often as the operator desires and he has finished his work upon the machine, he may by pressing a certain key and pulling the handle return all the disks to zero or clear, and the machine is now ready for the next work.

In practice it is found that it frequently happens that an operator fails to clear the machine before using, and while the series of disks if examined individuallywould show this fact owingto their size and position it is seldom that the operator observes them, and consequently when the footing is made the Serial no. 153,074.. (No model.)

amount would be plus the amount which had not been cleared previously.

Referring by letters to the drawings, A is a shaft pivoted in brackets a upon the front of the keyboard B of an adding-machine and directly in front of the operator. Secured to the shaft A is a right-angle signal-strip C, one wing of which is marked Clear and the other may be of any color to indicate danger or not clear.

An arm Dis secured to the shaft A at one side of the machine, to which is attached a rod E, that passes through a slot Z) in the keyboard B, its other end being secured to an arm F of a yoke G, which is pivoted to hangers 1, the latter being a part of the present machine and forming no part of my invention, and are for the purpose of carrying a shaft 2, upon which the disks at their zero-point are provided with semicircular pockets 0, into which (when the disks are at normal or clear) rests a series of fingers I, that form part of the connecting-bar J of yoke G.

A spring K is connected to the lower side of the keyboard B and rod E and serves to hold the fingers I into the pockets 0, in which position the signal-strip C displays the word Clear.

By the above description it is obvious that when the disks are at zero or clear the signal, which is directly in front of the operator, will show the word Clear when he looks at the keyboard; but if an amount has been left set up in the machine its corresponding disk will have moved from its normal or zero point, thereby forcing the finger I out of its pocket 0, which will cause the yoke G to rock upon its pivot, and the rod E through its connections will rotate the signal-strip and display the danger or not-clear signal.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an adding-machine, a single signal located upon the face of the keyboard thereof, means connecting said signal with a series of independently-operative disks whereby when any one of the latter is actuated the position of said signal is changed, substantially as set forth.

2. In an adding-machlne, a serles of inde- In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in 10 the county of Milwaukee and State of Wispendently operative disks, a yoke resting consin, in the presence of two Witnesses. upon the latter andconnectedto a signal upon the keyboard, whereby When-any one of the disks is actuated, the position of the signal is changed, substantially as set forth.

FRANK H. COTTRILL. Witnesses:

WALTER TEIFREL, A. V. BOGK. 

